Ports most of /tg/'s sprites for stacks displaying their contents. I added some of my own as well to fill in materials that we have but they didn't.
Moves all stack icons to their own dmi.
Reworks fifty_spawners to use paths instead of strings, as it prevents bugs in the long term.
A lot of new defines are now in inventory_sizes.dm, which contains;
All the size identifiers (the thing that tells the game if something is bulky, or w/e).
Storage costs for all the sizes, which are exponents of two, as previously.
A few constants for inventory size.
Also changes all storage item's capacity definitions by basing it off of how many 'normal slots' exist for it. This allows one to change the definition for all of the defines in the file, and everything will follow along without needing to change 500 files. In testing, I made all ITEMSIZE_COST_* defines doubled, and nothing had broke.
The benefit of doing all of this is that it makes adding new weight classes in the future much simpler, and makes knowing how much space a container has easier, as seeing ITEMSIZE_COST_NORMAL * 7 means it can hold seven normal items.
This brings down a bunch of defines from /code/defines/obj.dm unto their appropriate files.
I've moved morgue.dm from game/machinery into game/objects/structures since that file contains no machines.
I've reorganized the objects/items/stacks folder and made a 'sheets' and 'tiles' folder to keep things separate
I've separated stool_chair_bed.dm into its own folder which now contains the files: stools.dm, chairs.dm, bed.dm and alien_nests.dm to make it a little easier to go through.
git-svn-id: http://tgstation13.googlecode.com/svn/trunk@4582 316c924e-a436-60f5-8080-3fe189b3f50e
